FIGURE 6.

Entrophospora argentinensis. (A) Intact spores. (B–D,F) Spore wall layers (swl) 1–3; note the differences in thickness of the laminate swl2 in mature spores depicted in (B–D) and the equal thickness of swl2 in a young spore presented in (F), as well as the birefringent (b) properties of layer 2 in polarized light visible in (C). (E) Circular and ellipsoidal lighter patches (p) formed by the thinner areas of the laminate spore wall layer 2 seen in a plan view. (G,H) Subtending hyphal wall layers (shwl) 1–3 continuous with spore wall layers (swl) 1–3; note the highly deteriorated swl1 and a septum (s) in the subtending hyphal lumen formed by shwl2 and 3 continuous with swl2 and 3. (A,D–H) Spores in PVLG. (B) Spore in PVLG+Melzer’s reagent. (A–H) Differential interference microscopy. Scale bars: (A) = 50 μm, (B–H) = 10 μm.